Mandrel moving and cooling apparatus



June 17-, 1930. 1.. LOWY 1,764,736

. v MANDREL MOVING AND COOLING APPARATUS Filed March 12, 1928 2Sheets-Sheet 1 wrruESs INVENTOR June 17, 1930. L, fiwy 1,764,736

MANDREL MOVING AND COOLING APPARATUS Filed March 12, 1928 2Sheets-Sheet. 2

WKTNESs INVENTOR v '1 I I 6 03 7* 2 I Patented June I7, 1930 UNITEDSTATES PATENT OFFICE LUDWIG LfiWY, OF DUS SELIDOBF, GERMANY, ABSIGNOR TO8CHLOEMANN'AK'1IENGE- SELLSCHAFT, OF DUSSELDOBI', GERMANY MANDREL MOVINGAND COOLING APPA RiATUS Application filed Kai-ch 12, 1928, Serial No.281,173, and in Germany laroh 21, 1827.

In' pilger or swaging mills of known construction used in themanufacture of tubes,

with the proper working of the overhead traveling crane which serves themill, and they prevent a clear view of the mill from the operatingplatform. I

The object .of this invention is to provide simple and effectiveapparatus for handling and cooling mandrels, so constructed that it doesnot interfere with the work: ing of an overhead traveling crane, andthat it permits a clear View of the mill from the operating platform.

The invention is illustrated in the accompanying drawings, of which Fig.1 is a plan view of mandrel transferring and coolin apparatus associatedwith a swaging mill the mill being illustrated somewhatdiagrammatically; and Fig. 2 a combined 'elevation and vertical sectiontaken 11-11, Fig. 1.

The apparatus provided according to this invention comprises amandrel-cooler arranged at the side of a swaging mill, which mill may beany of the various forms of tube rolling mills in which a tubular orpierced billet or bloom remains upon a mandrel while it is progressivelyreduced and elongated to form a tube. Below the level of the mandrelattaching head of such a mill, there is provided a vertically movablesupport for receiving a hot mandrel from the head and lowering it to aposition for transferring it to the mandrel cooler, and also forreceiving a cooled mandrel and positioning it in line with the head forattachment to it. Means, preferably in the form of a pivotally supportedtable, is

on the line cated in ig. 1.

provided for receivin 'a hot mandrel from a lowered position 0 thevertically movable support and for transferring it to the cooler.Arranged in the cooler, mechanism, preferably in the form of a vanedwheel, is

provided for moving mandrels through the cooler and elevating them whencooled to a position for their reception by the vertically movablemandrel support.

Having reference to the illustrative embodiment of the invention, aswaging mill is shown as comprising a pair of pilger swaging rolls 1 anda feed mechanism 2, the forward end of the latter being provided with ahead 3 for the attachment of a mandrel.4. Below the level of the head 3,and

in a position to receive a mandrel 4 when it is withdrawn from rolls 1,there is a mandrel support 5 mounted in suitable guides 6 for verticalmovements which may be effected by a fluid pressure cylinder 7 Forreceiving mandrels from support 5 when it is lowered, there is rovided atable, preferably of skeleton rin, comprising arms 8 pivotally sup ortedat 9 and adapted to be rocked by a uid pressure mechanism 10. The outerends of arms 8 are provided with stops 11 for holding the mandrel on thetable until it has cooled below its critical temperatures.

At the outer end of table 8 there is a mandrel cooler preferably. in theform of an oil or water containing tank 12 having a cylindricalerforated mandrel support 13. Extending 1nto cooler 12 there is'a vanedwheel 14 adapted to be rotated by a motor 15' throu h the drivingconnections indi- In a position to receive cooled mandrels from theupper portions of wheel 14 there is a platform 16 extending from thewheel to vertically movable support 5.

In operation, when it is desired to remove .a hot mandrel 4 from theswagin mill, supbelow the inner end of table 8, the arms ofwhich receivethe mandrel while the support is being lowered. When the table thusreceives'a mandrel it is in the position indibetween adjacent vanes ofwheel 14. Here the mandrel is permitted to remain until sufficientlycooled, when motor 15 is operated to further move the mandrel throughand elevate it above the cooler.. When thus raised out of thecooler,'the mandrel is engaged by platform rails 16 where it remainsuntil again attached to the mandrel head of the feed mechanism for theswaging mill. For doing this, support 5 is moved upwardly to receive amandrel from platform 16, and then further raised to position it in linewith head 3 for attachment to it. In Fig. 2 a mandrel 4 is indicated inits operative position attached to and in line with head 3. In its otherpositions while being transferred to and through cooler 12, and whileresting on the platform 16, it is indicated by the numerals 4, 4", 4,4', 4, 4, and 4 According to the provisions of the patent statutes, Ihave explained the principle and operation of my invention, and haveillustrated and described what I now consider to represent its bestembodiment. However, I desire to have it understood that, within,

-the scope of the appended claims, the invention may be practiced byother forms of construction than specifically illustrated and described.

I claim as my invention:

1. A mandrel cooling apparatus, comprising a reservoir, a verticallymovable mandrel support at a side of said reservoir,

horizontally pivoted skeleton table for receiving a mandrel from saidsupport when the support is lowered and for transferring the upperportion of said wheel and for transferring them back to said supportwhen elevated.

, In testimony whereof, I hereunto sign my name.

LUDWIG LoWY.

means for. receiving a mandrel from said support when the support islowered and for transferring the' mandrel laterally to said reservoir,and means for moving a mandrel through and above said reservoir toposition it for lateral movement back to said support when elevated.

2. A mandrel cooling apparatus, comprising a reservoir, a verticallymovable mandrel support at a side of said reservoir, a horizontallpivoted skeleton table for receiving a man rel from said support whenthe sup- )ort is lowered and for transferring the mandrel laterally tosaid reservoir, and means for moving a mandrel through and above saidreservoir to position it for lateral movement back to said support whenelevated.

3. A mandrel cooling apparatus, comprising a reservoir, a verticallymovable mandrel support at a side of said reservoir, a

